Pulse-by-pulse reoptimization of the synthesis filter in pulse-based coders

• Published in: IEEE transactions on speech and audio processing Vol. 6; no. 2; pp. 180 - 185
• Main Authors: Hacioglu, K., Hasib, A.
• Format: Journal Article
• Language: English
• Published: New York, NY IEEE 01.03.1998; Institute of Electrical and Electronics Engineers
• Subjects: Algorithm design and analysis; Amplitude estimation; Applied sciences; Autocorrelation; Detection, estimation, filtering, equalization, prediction; Equations; Exact sciences and technology; Information, signal and communications theory; Iterative algorithms; Nonlinear filters; Performance analysis; Signal and communications theory; Signal processing; Signal, noise; Speech analysis; Speech coding; Speech processing; Speech synthesis; Telecommunications and information theory; Digital filtering; Linear prediction; Optimal filtering; Predictive coding; Iterative method; Algorithm; Speech processing
• ISSN: 1063-6676; 1558-2353
• DOI: 10.1109/89.661477

Two iterative algorithms for pulse-based linear predictive (PB-LP) analysis are developed. At the kth step, one of the algorithms assumes that the pulse locations of k pulses are known and calculates the LP coefficients jointly with k pulse amplitudes. In contrast, the other algorithm assumes that the previous k-1 pulse amplitudes are known and jointly estimates the LP filter coefficients and the kth pulse amplitude. These algorithms are proposed for synthesis filter reoptimization in pulse-based LP coders, and their effectiveness in multipulse coding is demonstrated through several simulations.